Best Free Communications Platform as a Service (CPaaS) of 2025

Digital Samba is a video conferencing solution that uses innovative features and technology to fulfil its customers' communication and collaboration needs. Clients use the platform for daily business meetings, webinars, online learning, application development, etc. The platform is the result of 19 years of experience at the forefront of the video conferencing space. This experience has helped create a feature-rich platform ready to adapt to changing technologies and workplace practices. Digital Samba's customers include world-renowned companies like McDonald's, Deloitte, Ferrari, Raiffeisen Centrobank, American Express and more. Thanks to the Digital Samba Embedded SDK, you’ll be able to integrate and control a full video conference experience inside your application by simply copy-pasting a few lines of JavaScript code.

The complete in-app collaboration API and SDK. Add contextual activity feeds, chat, and document collaboration directly into your apps to increase user engagement, improve in-app retention, and reduce customer churn. Modern apps need advanced collaboration features. Period. And let’s face it — a lot of app developers struggle to prioritize building their core functionality versus adding the contextual collaboration features that keep users engaged and productive. The big B2B tech players are already acquiring or building out chat, secure file sharing, contextual activity feeds and threaded conversations functions, which means every app is going to need them to stay competitive. That’s where Weavy comes in.

Bird, previously known as MessageBird, represents the future of CRM tailored for Marketing, Sales, and Payments, facilitating more than 5 trillion messages each year across platforms like Email, SMS, and WhatsApp. Top brands efficiently enhance their growth through Bird by engaging in tailored interactions across these channels. Innovative organizations around the globe utilize Bird's robust applications and APIs to create effective communication solutions. Start your journey today and connect with your customers seamlessly across various channels, catering to diverse use cases regardless of location. You can send marketing messages, push notifications, order confirmations, delivery updates, and much more. If operational challenges are hindering your growth, leverage automated conversations and workflows to gather essential information upfront, minimize manual tasks, establish self-service options, and direct chats to the appropriate agents. With our dependable, auto-scaling APIs, you can quickly get started with extensive documentation, comprehensive API references, and user-friendly SDKs at your disposal. Experience the power of streamlined communication and watch your business thrive.

Spring Edge offers innovative Authentication, Voice, and SMS APIs designed for seamless integration across various platforms, streamlining communication processes. With cutting-edge technology, our APIs allow for straightforward integration with any tech infrastructure, adhering to industry standards for sending SMS texts or voice messages. We deliver reliable messaging and voice solutions through multiple channels, all powered by InstantAlerts, ensuring effective communication for businesses. Our user-friendly web interface supports both instant messaging and bulk SMS capabilities, accessible via API or web-based platforms. At Spring Edge, we are committed to delivering top-tier services, with our dedicated technical support team readily available to assist you with any queries related to SMS and voice communications. Our goal is to empower businesses with efficient communication tools that enhance connectivity and responsiveness.

MSG91, a cloud communication platform, helps businesses and developers seamlessly add communication to services and software via communication APIs (SMS. Email, Voice. RCS. WhatsApp and many more) and ready-to use solutions like Cloud contact center or customer segmentation products.

One Platform for Realtime Communication: A platform to build and operate real-time interactivity for web, mobile, AI/ML, IoT, and Edge computing applications Faster & Easier Deployments: SDK support for 50+ mobile, web, server, and IoT environments (PubNub & community supported) and more than 65 pre-built integrations with external and third-party APIs to give you the features you need regardless of programming language or tech stack. Scalability: The industry’s most scalable platform capable of supporting millions of concurrent users for rapid growth with low latency, high uptime, and without financial penalties.

EmailLabs is a cloud-based email API and SMTP service designed to send transactional and marketing emails. The unique know-how and partnership between well-know Inbox Service Providers ensure all emails sent from our servers being tailored to the requirements of foreign providers like: Gmail, Yahoo or Hotmail as well as local ISPs such as WP.pl, Onet.pl, Seznam.cz, Web.de, Seznam.cz or Libero.it. We take care of overall deliverability to make sure your messages land in customers’ inboxes, promotions or Offers tab. EmailLabs platform can be easily integrated with any email system or application that allows you to add a third party SMTP server. The whole setup process takes only 5 minutes.

ConnectyCube is a cloud-based communication and collaboration platform that provides a range of real-time communication tools and services to developers and businesses. It offers a ready-to-use backend along with powerful APIs, SDKs, and code samples for various platforms, including Flutter, React Native, Web, Cordova, iOS, and Android. This makes it easier for developers to integrate real-time chat, video chat, push notifications, user authorization, whiteboard, chatbots, meeting recording, and other communication features into their applications — with no server-side implementation required. You can focus entirely on your app development. Add WhatsApp-like messaging and video calling functionality to your iOS, Android, or Web application to make it user-friendly and competitive in the market. Give your audience the ability to stay connected with friends, meet new people, and discuss news, events, and much more.

Ably is the definitive realtime experience platform. We power more WebSocket connections than any other pub/sub platform, serving over a billion devices monthly. Businesses trust us with their critical applications like chat, notifications and broadcast - reliably, securely and at serious scale.

ApiRTC serves as a developer-friendly library designed to seamlessly embed real-time communications, such as chat, audio, and video, into both web and mobile applications. Utilizing WebRTC technology, it ensures that media streams are encrypted and ideally transmitted through peer-to-peer connections; however, if necessary, a media relay via a TURN server can be employed. Acting as the central hub of our platform, ApiRTC handles the establishment of all user connections, presence tracking, and media setup. The library is offered in various formats to cater to different integration needs, whether for web applications, hybrid apps using JavaScript, or native applications developed for iOS and Android platforms. Furthermore, Apizee's solutions for audio and video communication are built on the WebRTC standard, which is increasingly supported by a wide range of internet browsers. This growing compatibility not only enhances the functionality of our solutions but also ensures that users can access audio and video streaming across most PCs, tablets, and smartphones, thereby significantly broadening the reach of our communications tools. Additionally, developers can leverage the flexibility of ApiRTC for a variety of use cases, making it an invaluable asset for modern application development.

Headquartered in Silicon Valley, Gupshup is a leading conversational messaging platform that enables businesses to build engaging conversational experiences seamlessly across 30+ messaging channels using a single API. Gupshup offers an easy-to-use omnichannel messaging API, advanced bot-building platform and mobile marketing tools. Gupshup's messaging platform handles over 6 billion messages per month enabling over 39,600 businesses send messages to several billion users across popular messaging channels such as SMS, Voice, WhatsApp, Mobile Web, Android RCS, Instagram, Twitter, Telegram, WeChat, FB Messenger, Slack, Viber, Skype and many more. Our Single API solution for 30+ messaging channels has enabled businesses to easily integrate 1-way and 2-way messaging on WhatsApp with fall back to SMS connectivity in over 225 countries with multi-channel auto routing option. Additionally, Gupshup Bot platform supports over 36,000 bots and can easily handle WhatsApp FAQ Bots with live agent handoff for various customer support use cases

Any product can be enhanced with live video and audio. You can start with our Daily Prebuilt user interface or create your own layouts using our APIs. We offer a fully-supported Daily Prebuilt user interface, as well as lower-level APIs that allow you to have complete UI/UX flexibility. Start by copying our sample repos. You can switch from prebuilt to customized at any time, while still using the same APIs. Daily Prebuilt is our plug and play embed. It's a fully functioning video chat that supports HD screen sharing, text chat and recording. For developers building custom video UI/UX. You can control audio and video tracks. Daily call object allows you to control layout and workflow. Automatic bandwidth management that responds to changing network conditions.

Authkey.io stands as an exceptional Enterprise Omni Channel API platform, offering an extensive suite of communication tools and APIs meticulously designed to empower businesses in their quest for efficient and secure customer engagement. SMS API:A seamless communication symphony with its event-based messaging prowess. This facet encompasses the seamless orchestration of Bulk SMS delivery, transactional messages, one-time passwords (OTP), and the authentication process through call-based interfaces. Voice API: This dynamic capability ensures the delivery of OTPs through vocal messages, providing an alternative avenue that ensures the recipient's prompt access. Email API: Reliable and rapid delivery of emails, serving critical functions such as password verification, account creation, OTP distribution, and email validation. WhatsApp Business API: The contemporary business landscape requires a direct conduit to reach the massive audience on the WhatsApp API facilitate this engagement, enabling businesses to establish a direct line of communication with their audience. Two-Factor Authentication (2FA) API: Seamlessly dispatching OTPs, verifying logins, and bolstering the security architecture of business software, CRM systems.

Dyte's Video SDK and APIs are SOC 2, GDPR, and HIPAA compliant. Embed scalable, customisable and secure video call into your web or mobile app with just few lines of code. It is compatible with Android, iOS, React Native, Angular and many more languages. With an uptime of 99.99%, industry-leading documentation, UI kit and out of the box plugins, customize the video experience within minutes.

As a global leader in customer communication solutions, we empower businesses to elevate their customer interactions. Our expertise lies in navigating the complexities of modern consumer engagement, driving growth, and enhancing customer satisfaction through streamlined, secure processes. GreenAds Global offers a comprehensive suite of tools to boost your customer outreach: WhatsApp Business API integration Rich Communication Services (RCS) AI-powered chatbots High-volume SMS campaigns Advanced voice messaging systems Partner with us to transform your customer engagement strategy and stay ahead in today's dynamic business landscape

In 2013, Flowroute emerged as the pioneering software-centric carrier, introducing the Flowroute HyperNetwork™ to meet the rigorous demands of carrier-grade services while leveraging the flexibility, automation, and scalable nature of cloud technology. The Flowroute SIP Trunking solution allows for seamless integration with existing PBX systems or analog/digital telephone adapters in just a few steps. Customers enjoy the freedom to adjust their call capacity as needed, paying solely for the minutes they consume, which means there are no limits on concurrent calls with Flowroute’s inbound SIP trunking. This eliminates the hassle of capacity planning, as the system automatically generates new instances to accommodate increasing call volumes, ensuring that voice services can expand effortlessly. Additionally, Flowroute optimizes outbound call audio transmission through the most efficient routing path available, enhancing call quality while reducing costs for both local and international calls. Overall, Flowroute's innovative solutions provide unparalleled flexibility and efficiency in telecommunications services.

Our reliable and simple SMS and Voice 2FA product allows you to validate leads and block bad actors so that you can engage worldwide customers. RingCaptcha's 2-factor authentication (2FA), provides a screen to block fake leads, while our backend code identifies and blocks suspicious requests and adds them to a blocklist to protect your business. RingCaptcha allows you to validate your leads so your sales team can know which ones are genuine and which are not. Review leads to identify competitors and stop them from getting inside information about your business. To screen repeat trial users who are not interested in purchasing your product, capture user data and increase costs. Get real leads, not freeloaders! A single click can often be all it takes to start a sales process. Use 2FA by SMS/Voice for real leads.

Mobile communication and payment solutions. Combine messaging channels such as WhatsApp with innovative payments to create Conversational Commerce. We help companies communicate. Our customers use voice, SMS, Voice, and the most popular chat apps, WhatsApp, Apple Business Chat, Google RCS, and WhatsApp. Let the AI bot handle the talking and start a conversation in the channel that your customers prefer. To increase conversions, integrate commerce into the conversation. CM.com is a payment service provider licensed by Apple Pay, Google Pay and WeChat Pay. It offers a variety of options for all channels with Apple Pay and Google Pay as well as Credit Cards and local payments such as Bancontact and Bancontact. CM.com also offers a ticketing platform that helps museums, stadiums and festivals sell and manage any type or ticket. The Customer Data Platform allows you to market on a personal level. Identity and esign solutions ensure authentication in all transactions

Video conferencing infrastructure for a world that is video-first. It is easy to integrate native iOS, Android and Web SDKs to add audio & video conferencing to your applications. These experiences are possible in a virtualized, remote-first world. This revolution is fuelled by 100ms' best in class quality and ease-of-use. Our team has been working with live video for years. We have solved this problem at world-class scales in different network and device environments. The fastest integration time is essential for a great infrastructure provider. 100ms powers resilient audio/video right out of the box and allows you to increase the speed of iteration 10x. You can host up to 10K people, stream to Youtube, or do custom layout recording. We have simplified the SDK layer and made it fully customizable. You can add up to 1000 hosts to a video conference without compromising audio-video quality.

Streamline the development of your video calling application by saving valuable time on UI and feature implementation. By using only five lines of code, you can seamlessly integrate video calling into your project. Simply generate an API Key to create a secure connection between your application and Video SDK. This setup ensures a robust end-to-end encrypted link between your app and our servers. By incorporating straightforward JavaScript code into your website, you'll find it easy to build an interactive video calling solution. With just a few lines of code, you can create an engaging video calling app tailored to your needs. Additionally, the Analytics Dashboard provides insights to track service usage and allows for manual operational control. Everything you need is included to create custom and branded live shopping experiences tailored for eCommerce brands of any size. Furthermore, all the necessary tools are available to develop secure telemedicine communication APIs and SDKs, ensuring safety and compliance at any scale. This comprehensive approach empowers you to innovate and expand your digital offerings efficiently.

Stop juggling multiple apps for customer interactions and streamline everything with Ticker! Elevate your business communication via our all-in-one omnichannel platform. Seamlessly handle customer inquiries, tickets, products, sales, and much more. Consolidate chats from platforms like WhatsApp, Instagram, and Messenger into a single conversation thread for a more organized approach. Gain a comprehensive view of your customers to ensure no detail is overlooked. Quickly develop chatbots for all your communication channels, customizing them for various days and time slots to ensure they are responsive in any context. You can also create and manage your business inventory efficiently. Boost your sales directly through chat while monitoring your revenue with our integrated CRM features. Engage with your customers on their preferred messaging apps, including WhatsApp, Instagram, and Facebook Messenger, and enrich your conversations by sharing files or images to provide them with precise information. With Ticker, you can enhance customer satisfaction while simplifying your operations.

WebRTC enables the integration of real-time communication features into applications by utilizing an open standard. It facilitates the transmission of video, audio, and various data types between users, empowering developers to create robust solutions for voice and video interactions. This technology is compatible with all contemporary web browsers and native applications across leading platforms. The underlying technologies of WebRTC adhere to an open web standard and are accessible through standard JavaScript APIs available in major browsers. Additionally, for native mobile applications such as those on Android and iOS, a library is provided that replicates the same capabilities. The WebRTC initiative is open-source and has backing from prominent companies like Apple, Google, Microsoft, and Mozilla, among others. Furthermore, the Google WebRTC team is responsible for the upkeep of this resource page, ensuring users have access to the latest developments and information.

Communication Platform As A Service, smsmode© offers complete mobile messaging routing. Connect with your customers anywhere in the world using our innovative and powerful tools. smsmode© integrates seamlessly with your existing tools, allowing you to maximize their potential by integrating mobile messaging. Use our REST, SMPP, and plugins to build these custom integrations for your applications, CRMs, ERPs, and more. Our documentation and experts will help you achieve your goals! European solution GDPR compliant ISO 27001 & 27701 99.95% SLA Responsability Europe CSR Commitment

PageGate functions as a server application dedicated to sending SMS and text messages to various wireless devices, including mobile and cell phones. It offers multiple methods for dispatching messages, such as through networked computers, email, websites, command line tools, text files, serial ports, and integration with other software applications. Messages can reach telecom providers via several means, including the Internet (using protocols like SNPP, WCTP, and SMTP), modems (TAP, UCP, GSM, TONE), or through direct serial connections (TAP). PageGate is designed for high capacity and includes built-in redundancy and failover mechanisms, ensuring that critical messages are delivered promptly. In contrast, NotePager Pro is a user-friendly desktop application that also facilitates the sending of text or SMS messages to mobile devices and cell phones. By utilizing an Internet connection, modem, or cellular modem, NotePager Pro enables efficient communication in a straightforward manner. Both applications exemplify the versatility and reliability of modern messaging solutions.

With over 700 direct carrier connections and 60+ offices on 6 continents, Infobip is a global leader in omnichannel communication. We make it our business to simplify how brands connect with, engage and delight their customers at global scale. Our programmable communications platform delivers a suite of tools for advanced customer engagement and support, plus security and authentication. We make this available to you across the widest range of communication channels possible. THE INFOBIP ADVANTAGE (1) Personalized omnichannel customer connections Achieve deeper customer engagement across the widest selection of local and global channels, including: SMS, RCS, WhatsApp, voice, video, email and the most popular chat apps. (2) Global reach, local presence Our 60+ offices around the world allow us to react faster. We provide 24/7 customer support, technical solutions in-line with needs and local requirements — based on proven best practices. (3) Full stack customer engagement Deliver better outcomes for your business by enhancing your communications with fully integrated contact center, marketing automation, and chatbot building solutions informed by our customer data platform.